/******************************************************************************
 * SAGE - Scalable Adaptive Graphics Environment
 *
 * Module: gpuCompression.h
 * Author : Byungil Jeong
 *
 * Copyright (C) 2004 Electronic Visualization Laboratory,
 * University of Illinois at Chicago
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation; either Version 2.1 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
 * License for more details.
 *
 * You should have received a copy of the GNU Lesser Public License along
 * with this library; if not, write to the Free Software Foundation, Inc.,
 * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 * Direct questions, comments etc about SAGE to bijeong@evl.uic.edu or 
 * http://www.evl.uic.edu/cavern/forum/
 *
 *****************************************************************************/

#ifndef GPU_COMPRESSION_H_
#define GPU_COMPRESSION_H_

#include "sail.h"

#define GPU_TEXTURE_NUM 6
#define GPU_SHADER_NUM 4

class gpuCompression {
private:
	GLuint frameBuffers[2];
	GLuint textures[GPU_TEXTURE_NUM];
	GLuint inputTex;
	
	int width, height, blockWidth, blockHeight;
	float numCols, numRows;
	
	GLuint shaderProg[GPU_SHADER_NUM];
		
public:		
	gpuCompression(sailConfig config, GLuint input);
	int RLEcompress(void *buf);
	int blockGeneration(void *buf);
};

#endif
